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Comparing Spam Filters
By Jeremy D. Zawodny
Expert Author
Article Date: 2006-01-17
Danny Sullivan of Search Engine Watch has been running a quantitative comparison of the spam filtering capabilities of Gmail, Yahoo! Mail, and SpamCop.
His first report shows that SpamCop is the most effective, while Yahoo catches the least spam but has the highest false positive rate, while Gmail is in the middle of the road. It's interesting to note that Gmail has zero false positives for Danny.
His second report shows similar numbers, though the false positive rate on Yahoo has decreased and Gmail's perfect record is tarnished. In his most recent report we see that Gmail and SpamCop are quite similar in the percentage of spam caught and the false positives. And the flase positive rate on Yahoo is back up in the 5% range.
About the Author:
Jeremy Zawodny is the author of the popular Jeremy Zawodny's blog. Jeremy is part of the Yahoo search team and frequently posts in the Yahoo! Search blog as well.
Visit Jeremy's blog: Jeremy Zawodny's blog.
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